Best AI Coding Assistants in 2026: Real Costs Compared

The short version

Almost every serious AI coding assistant now costs about $20 a month at the entry tier, and almost none of them stop there. The subscription buys you an allowance of model usage, not unlimited access, and the difference between a $20 month and a $150 month comes down to which model you pick and how many agents you leave running.

Here's where the four main options land in 2026:

• GitHub Copilot — free tier, then $10, $39 and $100 per month. Cheapest entry, and the only one that hands back more credit value than the sticker price.

• Cursor — free Hobby tier, $20 Pro, with heavier tiers above it and Teams seats at $40 per user.

• Claude Code — no free access; starts at $20 with the Claude Pro plan and runs to $100 and $200 for the Max tiers.

• Google Antigravity — free for individuals, with higher quotas attached to Google AI subscriptions.

The rest of this post explains what those numbers actually buy, and which one fits how you work.

Why the sticker price stopped meaning anything

Through 2025, these tools sold you a number of requests. In 2026 they nearly all sell you a dollar-denominated pool of model usage, and each request draws down that pool at the underlying model's rate.

GitHub made the switch explicit. Copilot now bills AI usage through GitHub AI Credits, where one credit equals $0.01, and every plan includes a monthly allowance. Chat, agents, the CLI and Spaces consume credits, while code completions and next edit suggestions don't — those stay unlimited on every paid plan. Cursor works the same way: every plan includes a set amount of model usage, and on-demand usage past that allowance is billed in arrears. githubCursor

The practical consequence is that two developers on the same $20 plan can produce wildly different bills. A frontier model chewing through a large codebase costs many times what a lightweight model costs on the same task. GitHub puts it plainly in its own FAQ: a quick question to a lightweight model costs a fraction of a credit, while a long agent session on a frontier model across many files costs considerably more. github

So the useful question isn't "which is cheapest." It's "which one's billing model matches how I actually work."

GitHub Copilot: the cheapest way in

Copilot has the most generous entry economics of the group. The free tier gives you 2,000 completions a month plus access to lighter models and the Copilot CLI. Pro is $10 a month and includes $15 in monthly credits along with unlimited code completion and next edit suggestions. Pro+ is $39 with $70 in credits and access to premium models. Max sits at $100 with $200 in credits, aimed at sustained agent workflows. github

Note what that means: on Pro you pay $10 and get $15 of usage. Every other tool in this comparison hands back roughly what you paid.

The other structural advantage is reach. Copilot runs in VS Code, Visual Studio, JetBrains IDEs, Neovim, Eclipse, Xcode, Zed and Raycast, plus GitHub.com and GitHub Mobile. Cursor and Devin Desktop are VS Code forks — if your team lives in JetBrains, that matters a lot. github

Where it's weaker: the agent experience has historically felt a step behind the agent-first tools, and IP indemnity and org policy controls are reserved for the Business and Enterprise seats rather than the individual plans.

Best for: developers who want autocomplete-first assistance, JetBrains users, and anyone who wants the lowest-risk monthly commitment.

Cursor: the default for agent-heavy work

Cursor is the AI-first editor most teams end up trying. The Hobby tier is free with limited agent requests, Pro is $20 a month, Teams seats are $40 per user per month, and Enterprise is custom-priced. Pro+ and Ultra sit above Pro, offering roughly 3x and 20x Pro's agent limits respectively, with Ultra adding priority access to new features. Third-party guides consistently list those two tiers at $60 and $200 a month, with annual billing knocking around 20% off. CursorOpslyft

The thing that catches people out is model routing. Cursor splits usage into two pools: one covering Cursor's own models, which is generous, and one for third-party models charged at the model's API price. Sit in Auto mode and costs stay predictable. Manually reach for a frontier model on every routine edit and the pool drains fast. Cursor

Cursor also recommends Pro+ for daily agent users and Ultra for agent power users — reasonable advice, but don't buy the upgrade speculatively. Run Pro for two full billing cycles first and let the usage dashboard tell you whether the ceiling is real. Cursor

Best for: developers doing multi-file refactors and agent-driven work who want a purpose-built editor rather than an extension.

Claude Code: terminal-first, one shared pool

Claude Code is the outlier in how it's sold — it isn't a standalone product at all. It ships with a Claude subscription or runs against an Anthropic API key.

Paid Claude plans include Claude Code alongside Claude Cowork and Claude Design, and Max is built for people working with Claude all day who want longer uninterrupted sessions, offering 5x or 20x Pro's usage per five-hour session. Independent trackers put those tiers at $20 a month for Pro, $100 for Max 5x and $200 for Max 20x, with a pay-per-token API route available instead of a subscription. Confirm current figures on Anthropic's pricing page before you commit. ClaudeCodeAgentSwarm

The quota mechanics deserve attention, because they're unlike the credit-pool tools. Usage limits reset on a rolling five-hour session window, paid plans add weekly limits on top, and activity across web, desktop, mobile and Claude Code all draws from the same pool. A heavy afternoon in the chat app genuinely eats into your evening coding budget — a real constraint if you use Claude for writing and research as well as code. Claude

Notably, there's no free path in. Claude Code isn't included in the free Claude tier at all; the cheapest entry is Pro or an API key. CodeAgentSwarm

Best for: developers who work in the terminal, run long agent sessions, and already use Claude for non-coding work.

Google Antigravity: free, with a caveat worth reading

Google's offering changed shape significantly this year, and older comparisons are now wrong.

Google unified its tools into a single multi-agent platform called Antigravity. From 18 June 2026, the Gemini Code Assist IDE extensions and Gemini CLI stopped serving requests for the individual, Google AI Pro and Google AI Ultra tiers, and affected users were directed to migrate to Antigravity and Antigravity CLI. Gemini Code Assist continues as a paid product for organisations under its Standard and Enterprise editions. Google

On the consumer side, Antigravity is free to start, with headroom sold through Google's AI subscriptions. Google previously offered Antigravity users a $20/month AI Pro plan for experimentation and a $250/month AI Ultra plan at the top; it has since added a $100/month Ultra tier for developers with lighter but regular needs and cut the top tier from $250 to $200. Google Antigravity

The trade-off is stability. A vendor that retired its own CLI within a year, and has repeatedly adjusted free-tier quotas, is not the safest thing to standardise a whole team on. As an evaluation environment at zero cost, though, it's hard to argue with.

Best for: developers on Google Cloud, and anyone who wants to test multi-agent workflows without paying for a trial.

One more you may know by a different name

If you're comparing against Windsurf, it no longer exists under that name. Cognition renamed the product Devin Desktop on 2 June 2026 via an over-the-air update, following its July 2025 acquisition of Windsurf — same editor, extensions and keybindings, folded into Cognition's Devin brand. Pricing had already been overhauled that March, retiring the old credit system in favour of daily and weekly quotas and raising Pro from $15 to $20, putting it level with Cursor. CreetaToolsrevis

Any comparison table still listing Windsurf at $15 with Cascade credits is describing a product that hasn't shipped for months.

What to check if you're outside the US

Every price above is quoted in US dollars, and that's not the number that will hit your account.

• Tax is extra. Cursor states plainly that all prices exclude applicable taxes. UK VAT at 20%, EU VAT at your member state's rate, Australian GST at 10% and Canadian GST/HST all get added on top. A $200 tier is closer to £190 once VAT lands. Cursor

• Business registration changes the maths. VAT-registered businesses in the UK and EU generally reclaim the VAT; sole traders below the threshold don't. Reverse-charge rules often apply for B2B purchases from US vendors, so check with your accountant rather than assuming.

• FX and card fees. USD-billed subscriptions on a non-USD card typically add 2–3% in conversion charges. Over a year on a $200 plan, that's real money.

• Expensing it. In most of these markets, developer tooling is a straightforward deductible business expense — but the invoice needs to be in the business name, which means signing up on a company account from day one rather than migrating later.

This is general information about product pricing, not financial or tax advice. Prices change frequently — confirm current figures on each vendor's own pricing page before you buy.

How to choose, in one pass

Skip the feature matrices. Answer three questions:

1. Which editor do you refuse to leave? JetBrains or Neovim narrows you to Copilot immediately. VS Code opens up everything.

2. Do you supervise one agent, or orchestrate several? One agent at a time means the $10–$20 entry tiers are genuinely enough. Three or four agents running in parallel means you'll hit ceilings within days, and the $100 tiers become the real entry point rather than a luxury.

3. Do you want a flat bill or the lowest bill? Subscriptions cap your downside and cap your usage. Pay-per-token API access has no monthly floor and no weekly wall, but no ceiling either.

Then run the cheapest plausible tier for two full billing cycles and read your own usage dashboard. Every one of these tools now exposes consumption data, and it will tell you more than any comparison post — including this one.

FAQ

What is the best free AI coding assistant in 2026?
Google Antigravity offers the most capable free individual tier, with access to its full model selection under weekly quotas. GitHub Copilot's free tier is more limited but more stable, giving you 2,000 completions a month plus CLI and agent access.

Is GitHub Copilot cheaper than Cursor?
Yes at the entry tier — $10 versus $20 — and Copilot Pro includes $15 of credits against a $10 fee. Whether it's cheaper in practice depends on how much premium-model agent work you do, since both bill overage at the underlying model rates.

Can I use Claude Code for free?
No. Claude Code requires a paid Claude plan starting at Pro, or an Anthropic API key billed per token. It is not available on the free Claude tier.

Why did my AI coding bill jump without my usage changing?
Almost always model choice. Frontier models cost several times more per token than lightweight or first-party models, so a change in default routing — or one long agent session on a large codebase — can multiply a month's spend. Check which model your agent defaulted to.

Do these prices include VAT or GST?
No. Listed prices are US dollars excluding tax, and VAT or GST is added at checkout based on your billing country.

The bottom line

For most working developers, the honest answer in 2026 is GitHub Copilot Pro at $10 or Cursor Pro at $20 — and staying there until your own usage data proves otherwise. The expensive tiers exist for people running agents continuously, and buying one before you've hit a ceiling is spending money on headroom you haven't needed yet.

Whichever you pick, set a spend cap on day one. Every one of these platforms supports it, and it's the single cheapest insurance against a surprise invoice.